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MozillaFirefox/mozilla-a11y.patch
Wolfgang Rosenauer 02a5839fe7 - update to Firefox 9 
- Fix accessibility under GNOME 3 (bnc#732898)

OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaFirefox?expand=0&rev=243
2011-12-18 13:10:54 +00:00

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# HG changeset patch
# User Michael Gorse <mgorse@suse.com>
# Parent d02253d1e8217008dfa26e6e2a901b6a8b75e989
a11y only enabled from Gnome 2's GConf setting
https://bugzilla.novell.com/show_bug.cgi?id=732898
https://bugzilla.mozilla.org/show_bug.cgi?id=693343
diff --git a/accessible/src/atk/Makefile.in b/accessible/src/atk/Makefile.in
--- a/accessible/src/atk/Makefile.in
+++ b/accessible/src/atk/Makefile.in
@@ -87,15 +87,19 @@ EXPORTS = \
# we want to force the creation of a static lib.
FORCE_STATIC_LIB = 1
include $(topsrcdir)/config/rules.mk
CFLAGS += $(MOZ_GTK2_CFLAGS)
CXXFLAGS += $(MOZ_GTK2_CFLAGS)
+ifdef MOZ_ENABLE_DBUS
+CXXFLAGS += $(MOZ_DBUS_CFLAGS)
+endif
+
LOCAL_INCLUDES += \
-I$(srcdir) \
-I$(srcdir)/../base \
-I$(srcdir)/../html \
-I$(srcdir)/../xul \
-I$(topsrcdir)/other-licenses/atk-1.0 \
$(NULL)
diff --git a/accessible/src/atk/nsApplicationAccessibleWrap.cpp b/accessible/src/atk/nsApplicationAccessibleWrap.cpp
--- a/accessible/src/atk/nsApplicationAccessibleWrap.cpp
+++ b/accessible/src/atk/nsApplicationAccessibleWrap.cpp
@@ -47,29 +47,27 @@
#include "nsIPrefBranch.h"
#include "nsIServiceManager.h"
#include "nsAutoPtr.h"
#include "nsAccessibilityService.h"
#include "AtkSocketAccessible.h"
#include <gtk/gtk.h>
#include <atk/atk.h>
+#include <dbus/dbus.h>
+
+using namespace mozilla::a11y;
typedef GType (* AtkGetTypeType) (void);
GType g_atk_hyperlink_impl_type = G_TYPE_INVALID;
-static bool sATKChecked = false;
+static PRBool sATKChecked = PR_FALSE;
static PRLibrary *sATKLib = nsnull;
static const char sATKLibName[] = "libatk-1.0.so.0";
static const char sATKHyperlinkImplGetTypeSymbol[] =
"atk_hyperlink_impl_get_type";
-static const char sAccEnv [] = "GNOME_ACCESSIBILITY";
-static const char sSysPrefService [] =
- "@mozilla.org/system-preference-service;1";
-static const char sAccessibilityKey [] =
- "config.use_system_prefs.accessibility";
/* gail function pointer */
static guint (* gail_add_global_event_listener) (GSignalEmissionHook listener,
const gchar *event_type);
static void (* gail_remove_global_event_listener) (guint remove_listener);
static void (* gail_remove_key_event_listener) (guint remove_listener);
static AtkObject * (*gail_get_root) (void);
@@ -609,36 +607,17 @@ toplevel_event_watcher(GSignalInvocation
}
return TRUE;
}
PRBool
nsApplicationAccessibleWrap::Init()
{
- // XXX following code is copied from widget/src/gtk2/nsWindow.cpp
- // we should put it to somewhere that can be used from both modules
- // see bug 390761
-
- // check if accessibility enabled/disabled by environment variable
- PRBool isGnomeATEnabled = PR_FALSE;
- const char *envValue = PR_GetEnv(sAccEnv);
- if (envValue) {
- isGnomeATEnabled = !!atoi(envValue);
- } else {
- //check gconf-2 setting
- nsresult rv;
- nsCOMPtr<nsIPrefBranch> sysPrefService =
- do_GetService(sSysPrefService, &rv);
- if (NS_SUCCEEDED(rv) && sysPrefService) {
- sysPrefService->GetBoolPref(sAccessibilityKey, &isGnomeATEnabled);
- }
- }
-
- if (isGnomeATEnabled) {
+ if (ShouldA11yBeEnabled()) {
// load and initialize gail library
nsresult rv = LoadGtkModule(sGail);
if (NS_SUCCEEDED(rv)) {
(*sGail.init)();
}
else {
MAI_LOG_DEBUG(("Fail to load lib: %s\n", sGail.libName));
}
@@ -877,8 +856,129 @@ LoadGtkModule(GnomeAccessibilityModule&
aModule.init ? aModule.shutdownName : aModule.initName,
aModule.libName));
PR_UnloadLibrary(aModule.lib);
aModule.lib = NULL;
return NS_ERROR_FAILURE;
}
return NS_OK;
}
+
+namespace mozilla {
+namespace a11y {
+
+#ifdef MOZ_ENABLE_DBUS
+static DBusPendingCall *a11yPendingCall = NULL;
+#endif
+
+void
+PreInit()
+{
+ static PRBool sChecked = FALSE;
+ if (sChecked)
+ return;
+ sChecked = TRUE;
+ DBusError error;
+ dbus_error_init(&error);
+ DBusConnection* bus = dbus_bus_get(DBUS_BUS_SESSION, &error);
+ if (!bus)
+ return;
+ dbus_connection_set_exit_on_disconnect(bus, FALSE);
+
+ DBusMessage *message;
+ message = dbus_message_new_method_call("org.a11y.Bus", "/org/a11y/bus",
+ "org.freedesktop.DBus.Properties",
+ "Get");
+ if (!message)
+ goto dbus_done;
+
+ static const char* iface = "org.a11y.Status";
+ static const char* member = "IsEnabled";
+ dbus_message_append_args(message, DBUS_TYPE_STRING, &iface,
+ DBUS_TYPE_STRING, &member, DBUS_TYPE_INVALID);
+ dbus_connection_send_with_reply(bus, message, &a11yPendingCall, 1000);
+
+dbus_done:
+ if (message)
+ dbus_message_unref(message);
+ if (bus)
+ dbus_connection_unref(bus);
+ dbus_error_free(&error);
+}
+
+PRBool
+ShouldA11yBeEnabled()
+{
+ static PRBool sChecked = PR_FALSE, sShouldEnable = PR_FALSE;
+ if (sChecked)
+ return sShouldEnable;
+
+ sChecked = PR_TRUE;
+
+ // check if accessibility enabled/disabled by environment variable
+ static const char sAccEnv [] = "GNOME_ACCESSIBILITY";
+ const char* envValue = PR_GetEnv(sAccEnv);
+ if (envValue)
+ return sShouldEnable = !!atoi(envValue);
+
+#ifdef MOZ_ENABLE_DBUS
+ PreInit();
+ PRBool dbusSuccess = PR_FALSE;
+ DBusMessage *reply = nsnull;
+ if (a11yPendingCall) {
+ dbus_pending_call_block(a11yPendingCall);
+ reply = dbus_pending_call_steal_reply(a11yPendingCall);
+ dbus_pending_call_unref(a11yPendingCall);
+ a11yPendingCall = nsnull;
+ }
+ if (!reply ||
+ dbus_message_get_type(reply) != DBUS_MESSAGE_TYPE_METHOD_RETURN ||
+ strcmp(dbus_message_get_signature (reply), "v"))
+ goto dbus_done;
+
+ DBusMessageIter iter, iter_variant, iter_struct;
+ dbus_bool_t dResult;
+ dbus_message_iter_init(reply, &iter);
+ dbus_message_iter_recurse (&iter, &iter_variant);
+ switch (dbus_message_iter_get_arg_type(&iter_variant)) {
+ case DBUS_TYPE_STRUCT:
+ // at-spi2-core 2.2.0-2.2.1 had a bug where it returned a struct
+ dbus_message_iter_recurse(&iter_variant, &iter_struct);
+ if (dbus_message_iter_get_arg_type(&iter_struct) == DBUS_TYPE_BOOLEAN) {
+ dbus_message_iter_get_basic(&iter_struct, &dResult);
+ sShouldEnable = dResult;
+ dbusSuccess = true;
+ }
+
+ break;
+ case DBUS_TYPE_BOOLEAN:
+ dbus_message_iter_get_basic(&iter_variant, &dResult);
+ sShouldEnable = dResult;
+ dbusSuccess = true;
+ break;
+ default:
+ break;
+ }
+
+ dbus_done:
+ if (reply)
+ dbus_message_unref(reply);
+
+ if (dbusSuccess)
+ return sShouldEnable;
+#endif
+
+ //check gconf-2 setting
+ nsresult rv = NS_OK;
+ static const char sSysPrefService [] =
+ "@mozilla.org/system-preference-service;1";
+ static const char sAccessibilityKey [] =
+ "config.use_system_prefs.accessibility";
+ nsCOMPtr<nsIPrefBranch> sysPrefService =
+ do_GetService(sSysPrefService, &rv);
+ if (NS_SUCCEEDED(rv) && sysPrefService)
+ sysPrefService->GetBoolPref(sAccessibilityKey, &sShouldEnable);
+
+ return sShouldEnable;
+}
+} // namespace a11y
+} // namespace mozilla
+
diff --git a/accessible/src/base/nsAccessibilityService.h b/accessible/src/base/nsAccessibilityService.h
--- a/accessible/src/base/nsAccessibilityService.h
+++ b/accessible/src/base/nsAccessibilityService.h
@@ -41,16 +41,36 @@
#include "nsIAccessibilityService.h"
#include "a11yGeneric.h"
#include "nsAccDocManager.h"
#include "nsIObserver.h"
+namespace mozilla {
+namespace a11y {
+#ifdef MOZ_ACCESSIBILITY_ATK
+/**
+ * Perform initialization that should be done as soon as possible, in order
+ * to minimize startup time.
+ * XXX: this function and the next defined in nsApplicationAccessibleWrap.cpp
+ */
+void PreInit();
+
+/**
+ * Is platform accessibility enabled.
+ * Only used on linux with atk for now.
+ */
+PRBool ShouldA11yBeEnabled();
+#endif
+
+} // namespace a11y
+} // namespace mozilla
+
class nsAccessibilityService : public nsAccDocManager,
public nsIAccessibilityService,
public nsIObserver
{
public:
virtual ~nsAccessibilityService();
NS_DECL_ISUPPORTS_INHERITED
diff --git a/widget/src/gtk2/nsWindow.cpp b/widget/src/gtk2/nsWindow.cpp
--- a/widget/src/gtk2/nsWindow.cpp
+++ b/widget/src/gtk2/nsWindow.cpp
@@ -103,29 +103,20 @@
#include "nsIStringBundle.h"
#include "nsGfxCIID.h"
#include "nsIObserverService.h"
#include "nsIdleService.h"
#include "nsIPropertyBag2.h"
#ifdef ACCESSIBILITY
-#include "nsIAccessibilityService.h"
+#include "nsAccessibilityService.h"
#include "nsIAccessibleDocument.h"
-#include "prenv.h"
-#include "stdlib.h"
using namespace mozilla;
-
-static PRBool sAccessibilityChecked = PR_FALSE;
-/* static */
-PRBool nsWindow::sAccessibilityEnabled = PR_FALSE;
-static const char sSysPrefService [] = "@mozilla.org/system-preference-service;1";
-static const char sAccEnv [] = "GNOME_ACCESSIBILITY";
-static const char sAccessibilityKey [] = "config.use_system_prefs.accessibility";
#endif
/* For SetIcon */
#include "nsAppDirectoryServiceDefs.h"
#include "nsXPIDLString.h"
#include "nsIFile.h"
#include "nsILocalFile.h"
@@ -1109,19 +1100,18 @@ nsWindow::Show(PRBool aState)
NativeResize(mBounds.x, mBounds.y, mBounds.width, mBounds.height,
PR_FALSE);
} else if (mNeedsResize) {
NativeResize(mBounds.width, mBounds.height, PR_FALSE);
}
}
#ifdef ACCESSIBILITY
- if (aState && sAccessibilityEnabled) {
+ if (aState && a11y::ShouldA11yBeEnabled())
CreateRootAccessible();
- }
#endif
NativeShow(aState);
return NS_OK;
}
NS_IMETHODIMP
@@ -3887,16 +3877,21 @@ nsWindow::Create(nsIWidget *aPare
nsIWidget *baseParent = aInitData &&
(aInitData->mWindowType == eWindowType_dialog ||
aInitData->mWindowType == eWindowType_toplevel ||
aInitData->mWindowType == eWindowType_invisible) ?
nsnull : aParent;
NS_ASSERTION(!mWindowGroup, "already have window group (leaking it)");
+#ifdef ACCESSIBILITY
+ // Send a DBus message to check whether a11y is enabled
+ a11y::PreInit();
+#endif
+
// initialize all the common bits of this class
BaseCreate(baseParent, aRect, aHandleEventFunction, aContext,
aAppShell, aToolkit, aInitData);
// Do we need to listen for resizes?
PRBool listenForResizes = PR_FALSE;;
if (aNativeParent || (aInitData && aInitData->mListenForResizes))
listenForResizes = PR_TRUE;
@@ -4278,43 +4273,16 @@ nsWindow::Create(nsIWidget *aPare
LOG(("\tmGdkWindow %p %lx\n", (void *)mGdkWindow,
gdk_x11_window_get_xid(mGdkWindow)));
}
// resize so that everything is set to the right dimensions
if (!mIsTopLevel)
Resize(mBounds.x, mBounds.y, mBounds.width, mBounds.height, PR_FALSE);
-#ifdef ACCESSIBILITY
- nsresult rv;
- if (!sAccessibilityChecked) {
- sAccessibilityChecked = PR_TRUE;
-
- //check if accessibility enabled/disabled by environment variable
- const char *envValue = PR_GetEnv(sAccEnv);
- if (envValue) {
- sAccessibilityEnabled = atoi(envValue) != 0;
- LOG(("Accessibility Env %s=%s\n", sAccEnv, envValue));
- }
- //check gconf-2 setting
- else {
- nsCOMPtr<nsIPrefBranch> sysPrefService =
- do_GetService(sSysPrefService, &rv);
- if (NS_SUCCEEDED(rv) && sysPrefService) {
-
- // do the work to get gconf setting.
- // will be done soon later.
- sysPrefService->GetBoolPref(sAccessibilityKey,
- &sAccessibilityEnabled);
- }
-
- }
- }
-#endif
-
#ifdef MOZ_DFB
if (!mDFB) {
DirectFBCreate( &mDFB );
D_ASSUME( mDFB != NULL );
if (mDFB)
mDFB->GetDisplayLayer( mDFB, DLID_PRIMARY, &mDFBLayer );
@@ -6504,19 +6472,18 @@ nsWindow::DispatchAccessibleEvent()
DispatchEvent(&event, status);
return event.mAccessible;
}
void
nsWindow::DispatchEventToRootAccessible(PRUint32 aEventType)
{
- if (!sAccessibilityEnabled) {
+ if (!a11y::ShouldA11yBeEnabled())
return;
- }
nsCOMPtr<nsIAccessibilityService> accService =
do_GetService("@mozilla.org/accessibilityService;1");
if (!accService) {
return;
}
// Get the root document accessible and fire event to it.
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